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How to calibrate a yaw-rate sensor

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Calibrating a yaw sensor is an essential step after any repairs, alignment or modifications that affect a vehicle’s weight distribution, as the ESC systems rely on its data to detect whether the vehicle is skidding, or there’s loss of control. In this video, Phil demonstrates on a 2024 MG ZS how to…

Use the Delphi DS Diagnostic Tool to carry out the yaw sensor calibration
Step-by-step navigate through all menus and options
Make sure the vehicle’s battery charge is high enough if an EV

Vehicle Electronics & Engine Management How to 1 min read

What does a yaw sensor do?

The ESC (electronic stability control) system uses data from the yaw sensor, steering angle sensor, wheel speed sensors, and lateral acceleration sensors to determine if the vehicle is deviating from the driver’s intended path due to skidding, understeering or oversteering. Specifically, it measures the vehicle’s rotational rate around its vertical axis, so any replacement or repair affecting the vehicle’s stance would require a calibration of the yaw sensor.

Does an EV vehicle need to be fully charged when carrying out calibrations?

While the EV you’re working on doesn’t need to be fully charged, if its voltage is running low it can cause problems in the calibration process. If it is low, attach a battery support unit to maintain a steady voltage allowing you to go ahead with the calibration.

Why is it recommended to start with a pre-scan before starting the calibration process?

A pre-scan is very helpful in filtering down the calibration options. After a pre-scan, the DS Diagnostic Tool will only show the application modules for the vehicle you’re working on, enabling you to quickly and easily find the relevant yaw sensor calibration option from the list.